Clutch shifting mechanism for transmission gears



Sepiz. E2, 1933. J. F. GAYLORD CLUTCH SHIFTING MECHANISM FOR TRANSMISSION GEARS Filed Feb. 26, 1931 iv Pi Mm 4 Patented Sept 12,1933- 1 onn'ron s i 1,926,940 1 p w IFTING. MECHnNISMFQIt-r l I 1 TRANSMISSIONi GEARS U p p John. F." Gaylord, Mimcie; mag-leagues by; 4'

jmesne assignments, to The Gaylordf-qor'npanyfi llnc flomer, La.', acorporation of Louisiana "jjippliast m 9:1.:fsssimo.a ar;

Ill-aims; .(CI.;192-V-99)7 ing this auxiliary clutch-whichmeans shall be simple and reliable; Onetype of structure to which. theinventionlis particularly adapted is.

that shown in myco-pending application Ser. No. 504,899, filed December 26, 1930 for transmission. gears. The-invention, however, is not limited in its use tothis particular type of a V gear transmission for it may be adapted for use with any suitable mechanism.

Referring to the accompanying drawing, which is made a part hereof and on whichrsimilar reference characters indicate similar parts,

Figure 1 is a vertical section through the housing and gear of a motor vehicle transmission with my device applied thereto,

Figure 2, a detail view'of av modified form of lever used with the invention, and

Figure 3 is a section on line 3-.-3 of Figure 1.

In the drawing numeral 10 indicates the usual gear housingin which are journaled a driving shaft 11, an intermediate shaft 12 and a driven shaft having gear teeth 13 on its inner end. The

. intermediate shaft has mounted thereon gears 14 and 15 which are movable axially on the shaft by'means of depending fingers 16 and 1'7 which are secured tocollars; one of which is shown as 18 and is slidableon a rod 19 which is. secured. in the housing. 10. shaft 12 is a ring gear 20 which has gear teeth Slidably mounted on the 21 which are brought into mesh with the gear teeth '13 on the driven. shaft. moved into and out 'ofengagement with the gear 13 by means of a fork 48 secured upon an axially movable rod 22. The rod 22 is similar in many respects to that shown in the co-p'ending application referred to. A hollow gear shifting lever 23 is positioned in the gear housing and .5 hasan enlarged portion 24 upon which it is pivot- 4 ally mounted in the upper cone-like portion of thegear housing 10 being held in elevated position by means of'spring 25. The loweriendof the lever is movable to en age a notch in one of .the blocks 18 for shifting the gears'in well-. known manner. Positioned within thelever 23 'is an operatingplunger 26. The lower end of this plunger is'bent at right angles and extends out through a slot 27 in the lower end of the .lever 23. A link .28 is" pivoted to-the bent end 29. The lower end of the link 28 is pivoted at position and this locks clutch elements in engagement one with the The ring 20 is 30.110 one end ofla rock arm 31 which rock arm is: pivoted at. 32 .to the; gear coverzj The other end 33, of therock a'rm engages in' the upper end of thefork- 48 for shifting thegrod 22 axiallyg The plunger 26 is notched at -:34 in which notch engages a. springepressed key 35. which-holds the plunger in its lowermost position when it has been depressed by the operator.

:lnoperation inorder to shift the ring 20 carrying the gear. teeth 2 1' into engagement withthe teethlS the-plunger 26 ,is depressed...-,This rocks. the-arm'L-BL onitspivot-BJ. and moves the rod 22 to the right against the tension of a spring 36. The key 35 holds the plunger in its lowermost the rod 22 to maintain the other. .Since the gear 15 is always moved to the right when the gears are put into the position for reversing the car, the gear 15 will carry the clutch ring 20 to. the right to bring the vclutch elements into engagement with each other. This is as it should be for during reverse movement. of the car the clutch 20 must positively drive the clutch 13 in a counterclockwise. direction when viewing the elements from the left of the position' in which they are shownin Figure 1.

In Figure 2 is shown a modified form oflever arrangement for operating the clutch shifting rod 3'2. In this form the rod has the fork 38 which engages the ring gear and the rod 3'? is urged to the left bymeans ofa spring 39 whenever it is released so that it can be moved in that direction.

'A lever 40 is pivoted at 41 in the bell housing and has its lower end engageable in a notch inthe rod 3'7. The upperend of the lever 40 is attached and locks it in with the notch 46. A leaf spring 47 holds the bar 42 down to maintain the notch 46 in locked position. i

It will be obvious to those skilled in the art that various changes may be made in my device without departing from the spirit of the invention and therefore I do not limit myself to what is shown in the drawing and described in the specification, but only as indicated by the appended claims;

Having thus fully described -my said invention, what I claim as new'and desire to secure by Let-;

tersPatent, is: p

l.'In an automobile transmission having free wheeling mechanism, the combination with a it f positive clutch of means for moving the positive clutch into operative position comprising a shaft operatively connected to said clutch, a pivoted lever having one end engaging said shaft and mounted on the automobile adjacent the driver's seat, a notched plunger for locking said lever in position, and a spring acting against said clutch to throw it out when said notched plunger is released, substantially as set forth.

2, In a gear transmission in combination an auxiliary positive clutch, ashaft for operating said clutch, a pivoted lever having its lower end in engagement with said shaft to operate it, a plunger slidably mounted on thevehicle and extending through the upper end of said lever, a pin in said plunger, a spring on said plunger between said pin and the end of said lever,-said spring providing lost motion connectionbetween said plunger and said lever, substantially as set forth.

3. In an automobile transmission having an auxiliary positive clutch element, a housing, a shaft slidably mounted in said housing for. operating said clutch element, alever engaging said shaft and manually movable in one direction to v move the clutch element tooperative position, a

spring engageable with said shaftrfor moving it in the other direction to move the clutch element out of operative position, a plunger engaging said lever and having a notched portion for holding it in position to lock the clutch element inoperative position, a spring on said plunger forming a yieldin'g connection between the plunger and the lever with its cooperating clutch element.

to permit the lever to be moved independently of the said plunger to permit the shaft to be moved to move the clutch element to inoperative position without moving the said plunger, substantially as set forth.

,4. In an automobile transmission having free wheeling mechanism the combination with a positive clutch of means for moving the positive clutch into operative position comprising a shaft operatively connected to said clutch, a lever pivotally mounted on said automobile having one end engaging said shaft, and having means re siliently connected to the other end for manually moving, said clutch tooperative position, and a spring acting against said shaft to move said clutch out of operative position.

5. In a motor vehicle transmission having free wheeling mechanism and relatively movable positive clutch elements the combination with one of said positive clutch elements of means for moving it into, clutching engagement with the other comprising a 'shaft operatively connected to said clutch element, a lever pivotally mounted on said vehicle and having one end engaging said shaft and having resilient means connected to the other. end for manually moving said clutch element to clutching engagement with its cooperating clutch element, and a spring acting against said shaft to move said clutch out of clutching JOHN F. GAYLORD. 

